<template>
    <div>
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{path:'/home'}">首页</el-breadcrumb-item>
        <el-breadcrumb-item>权限管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色列表</el-breadcrumb-item>
      </el-breadcrumb>
      <el-card>
        <el-row>
          <el-col>
            <el-button type="primary"
            @click="addDialogVisible=true">添加角色</el-button>
          </el-col>
        </el-row>
        <el-table :data="roleList" border stripe>
          <el-table-column type="expand">
            <template slot-scope="scope">
              <el-row v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
              :class="['bdbottom',i1===0?'bdtop':'','vcenter']">
                <el-col :span="5">
                  <el-tag closable
                      @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <el-col :span="19">
                  <el-row v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                  :class="[i2===0?'':'bdtop','vcenter']">
                    <el-col :span="6">
                      <el-tag type="success" closable
                      @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                      <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="18">
                      <el-tag v-for="(item3) in item2.children"
                      :key="item3.id"
                      type="warning" closable
                      @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                    </el-col>
                  </el-row>
                </el-col>
              </el-row>
            </template>
          </el-table-column>
          <el-table-column type="index"></el-table-column>
          <el-table-column label="角色名称" prop="roleName"></el-table-column>
          <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
          <el-table-column label="操作" width="300px">
            <template slot-scope="scope">
              <el-button size="mini" type="primary" icon="el-icon-edit"
              @click="showEditDialog(scope.row.id)">编辑</el-button>
              <el-button size="mini" type="danger" icon="el-icon-delete"
              @click="removeRoleById(scope.row.id)">删除</el-button>
              <el-button size="mini" type="warning" icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
          </el-table-column>
        </el-table>

        <el-dialog
          title="添加角色"
          :visible.sync="addDialogVisible"
          width="30%"
          @close="addDialogClosed">
          <el-form ref="addFormRef" :model="addForm"
          :rules="addFormRules" label-width="100px">
            <el-form-item label="角色名:" prop="roleName">
              <el-input v-model="addForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述:" prop="roleDesc">
              <el-input v-model="addForm.roleDesc"></el-input>
            </el-form-item>

          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="addRole">确 定</el-button>
          </span>
        </el-dialog>

        <el-dialog
          title="修改角色"
          :visible.sync="editDialogVisible"
          width="50%"
          @close="editDialogClosed">
          <el-form ref="editFormRef" :model="editForm"
          :rules="editFormRules" label-width="100px">
            <el-form-item label="角色名:" prop="roleName">
              <el-input v-model="editForm.roleName" disabled></el-input>
            </el-form-item>
            <el-form-item label="角色描述:" prop="roleDesc">
              <el-input v-model="editForm.roleDesc"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="editRoleInfo">确 定</el-button>
          </span>
        </el-dialog>

        <el-dialog
          title="分配权限"
          :visible.sync="setRightDialogVisible"
          width="50%"
          @close="setRightDialogClosed">
          <el-tree :data="rightsList" :props="treeProps" ref="treeRef"
          show-checkbox node-key="id" default-expand-all
          :default-checked-keys="defKeys"
          ></el-tree>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRightDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
          </span>
        </el-dialog>
      </el-card>
    </div>
</template>
<script>
export default {
  data () {
    return {
      roleList: [],
      addDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [{
          required: true, message: '请输入角色名', trigger: 'blur'
        },
        {
          min: 2, max: 10, message: '角色名的长度在2~10个字符之间', trigger: 'blur'
        }]

      },
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        roleName: [{
          required: true, message: '请输入角色名', trigger: 'blur'
        },
        {
          min: 2, max: 10, message: '角色名的长度在2~10个字符之间', trigger: 'blur'
        }]
      },
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      roleId: ''
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data
    },
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    addRole () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addForm)

        if (res.meta.status !== 201) {
          this.$message.error('添加角色失败！')
        }
        this.$message.success('添加角色成功！')
        this.addDialogVisible = false
        this.getRolesList()
      })
    },
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    editRoleInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('roles/' + this.editForm.roleId,
          { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc })
        if (res.meta.status !== 200) {
          return this.$message.error('更新角色信息失败！')
        }
        this.editDialogVisible = false
        this.getRolesList()
        this.$message.success('更新角色信息成功！')
      })
    },
    async removeRoleById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message({
          type: 'info', message: '已取消删除'
        })
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色失败！')
      }
      this.$message.success('删除角色成功！')
      this.getRolesList()
    },
    async removeRightById (role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message({
          type: 'info', message: '已取消删除'
        })
      }
      const { data: res } =
      await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      this.$message.success('删除权限成功！')
      role.children = res.data
    },
    async showSetRightDialog (role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      this.rightsList = res.data
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item =>
        this.getLeafKeys(item, arr)
      )
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } =
      await this.$http.post(`roles/${this.roleId}/rights`,
        { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>
<style lang='less' scoped>
  .el-tag{
    margin: 7px;
  }
  .bdtop{
    border-top: 1px solid #eee;
  }
  .bdbottom{
    border-bottom: 1px solid #eee;
  }
  .vcenter{
    display: flex;
    align-items: center;
  }
</style>
